KR101887592B1 - Connecting type lawn deck - Google Patents

Abstract

A connecting lawn deck is disclosed. A connection type grass deck according to an embodiment of the present invention includes a floor unit providing a bottom surface of a cultivation space where grass is grown; An outer cover installed to surround the outer periphery of the floor unit and providing an outer surface of the cultivation space; An inner cover disposed along the inner surface of the outer cover to be in contact with the soil provided in the growing space; And at least one connection frame inserted inward from the outside of the outer cover to connect the floor unit and the outer cover while penetrating the inside of the floor unit; Wherein the floor unit has a lattice structure and has a first drain hole formed in a mesh shape in each space forming a lattice structure; A lower plate having a plurality of second drain holes connected to the first drain holes and disposed at a lower portion of the upper plate; And a plurality of connecting ribs for connecting the upper plate and the lower plate in a spaced manner; Wherein the connection frame is inserted through a plurality of connection grooves formed on each side of the outer cover, and both ends of the gripper protrude to the outside of the outer cover and are gripped when being moved; And the connection frame is disconnected from the floor unit and the outer cover through the grip portion when the installation frame is installed in the installation space of the construction site where the lawn is made, thereby disconnecting the floor unit and the outer cover connected to each other.

Description

Connection type grass deck {CONNECTING TYPE LAWN DECK}

The present invention relates to a grass deck, and more particularly, to a connection type grass deck in which lawns are cultivated in an area other than a construction site, and then transported to a construction site to form a lawn through connection and assembly.

As the environment emerges as an important factor in determining the welfare of mankind, the scale of the environmental industry related to pollution prevention and purification, clean technology and environmental restoration is increasing. The global environmental market reached $ 495 billion in 1999, roughly half of the global auto market of $ 1.37 trillion, compared with $ 882 billion in information technology and $ 175 billion in memory semiconductors. It is a never-ending market.

In recent years, there has been a rapid increase in the market related to the environment restoration business as the interest in restoration of the damaged environment has been increased worldwide.

As a typical environment restoration project, eco-friendly greening projects are being carried out on cut slopes and embankment slopes existing in areas where various roads, railways, river banks, and tunnel entrances are constructed.

This eco-friendly greening project is to plant landscaping water or grass for the purpose of preventing erosion by rainfall, alleviating temperature changes on the surface, restraining and alleviating frostbite by binding topsoil with plant roots, preventing aesthetic effect and preventing soil pollution It is common.

Among them, grass is a perennial herbaceous plant that is resistant to frequent cuts and pressures and has a strong regenerative power among the grapevines covering the surface of the earth. Therefore, it is advantageous to use as a plant for slope greening.

As a method of lawn planting in Korea, grass cultivation methods such as flattening planting method using flat land and jute planting method using lattice are mainly performed. It is possible to move and install the lawn immediately at a place where the composition of the lawn is needed, but there is a disadvantage that the growth point of the grassy root is damaged during cutting to a certain size.

In addition, since the grassy soil is attached to the roots, there is a disadvantage in that it takes up a lot of space for transportation when it is transported to a necessary place, and there is a problem that the grassy surface formed by the amount of roots and soil is not uniform.

Accordingly, a seed spray method or a net or mat method has been developed and applied to the grass-based vegetation method for environmentally friendly greening projects.

First, the seed spraying method is a method of mixing seeds and blending soil of grass and spraying it on a slope through a wave machine, so that the construction is simple and the construction cost is low.

However, there is a problem in that the germination rate is low in dry climates because seeds and blended soil are easily lost or concentrated in some areas owing to the scouring phenomenon of the surface during irrigation work and rainfall.

In addition, although it is covered with mats for the warming, moisturizing and blooming of seeds and slopes sown by the seed spraying method, since the strength of the material is weak, it is difficult to prevent scraping and sliding of the ground surface, It is true.

In the case of the vegetation method using various nets or mats, a vegetation layer made of seeds and vegetation-based materials and a natural net material such as jute and coir are used to form a net net By covering the slope including the net to which the tensile strength is imparted, it is advantageous in stabilizing the slope by preventing scarification or sliding of the slope and detaining the slope.

In addition, by providing a net or a mat containing a vegetation-based material including seeds and nutrients capable of germinating seeds or nets in the net or mat, It is widely applied.

On the other hand, grasses that are used commercially in Korea are mostly introduced to foreign countries, but they are not adapted to domestic climate characteristics. Therefore, if careful management after lawn composition is not followed, growth rapidly declines, And the like.

On the other hand, Korean turfgrass grows naturally in Korea, so it can create a harmonious environment with surrounding environment, and turfgrass and ecological adaptation area is distributed from the temperate to the tropical area, so that it is more environmentally adaptable than other Hanji grass and other turf grass. It is the best grass for the domestic climate because it is.

According to the researches so far, five to six species of grasses such as Zoysia japonica Steud, Zoysia matrella, Zoysia tenufolia, Zoysia sinica and Zoysia macrostachya were found in Korean grasses Have been reported to be distributed.

In particular, Zoysia japonica Steud, which is the most common grass in Korea, is the only grass with simultaneous cold resistance approaching to Hanji-style grass, to be.

It grows well on poor soil, is well tolerated by insect pests, and has long-term climate safety, self-resilience and abrasion resistance, making it the most suitable grass for Korea's climate.

These slurries are widely used in Korea, and are mainly used for cutting slopes or embankment slopes, river embankments, roads, cemeteries, etc. Also, they are widely used for landscaping plants for houses and parks. Recently, Golf courses, baseball fields, and the like.

However, it is required that cultivation should be performed in a place other than the construction site because the slow speed of germination and the low greening efficiency are limited in the area where fast vegetation is required.

The matters described in the background section are intended to enhance the understanding of the background of the invention and may include matters not previously known to those skilled in the art.

Registration Utility Model No. 20-0474918 (October 16, 2014)

An embodiment of the present invention is to provide a connection type grass deck in which lawns are cultivated in an area other than a construction site, and then transported to a construction site to connect and assemble the lawn.

A connection type grass deck according to an embodiment of the present invention includes a floor unit providing a bottom surface of a cultivation space where grass is grown; An outer cover which is installed around the outer periphery of the floor unit and provides an outer surface of the cultivation space; An inner cover installed along an inner surface of the outer cover and contacting the soil provided in the cultivation space; And at least one connection frame inserted inward from the outside of the outer cover to connect the floor unit and the outer cover while penetrating the inside of the floor unit; Wherein the floor unit has a lattice structure and has a first drain hole formed in a mesh shape in each space forming a lattice structure; A lower plate having a plurality of second drain holes connected to the first drain holes and disposed at a lower portion of the upper plate; And a plurality of connecting ribs for connecting the upper plate and the lower plate in a spaced manner; Wherein the connection frame is inserted through a plurality of connection grooves formed on the respective surfaces of the outer cover, and both ends of the gripper protrude outwardly of the outer cover and are gripped when being moved; And the connection frame may be disconnected from the floor unit and the outer cover through the grip unit when the floor is installed in the installation space of the construction site where the lawn is made, .

In the connection type grass deck according to an embodiment of the present invention, the outer cover may include a display window installed on a surface surrounding the outer periphery of the floor unit so as to confirm the cultivation space from the outside.

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In the connection type grass deck according to the embodiment of the present invention, the inner cover can maintain the roundness of the soil that is hardened by the outer cover when the outer cover is removed.

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The connecting lawn deck according to an embodiment of the present invention may further include a lamination unit installed at each corner of the outer cover and stacking the outer cover connected up and down, A connecting portion protruding outward along a vertical direction and having an insertion hole formed along the longitudinal direction thereof; And a first connection pin having one side inserted into the insertion hole of the connection portion and the other side protruding outward.

The connection type grass deck according to an embodiment of the present invention may further include a construction unit for replacing the floor unit in which grass is grown in each of the grid-like installation spaces, can do.

In the connection type grass deck according to the embodiment of the present invention, the construction unit is provided with wiring of electrical equipment required for irrigation pipes and lawn cultivation therein, and the construction unit includes a base frame of a cross shape; And a subframe connecting the outermost edges of the base frame; The base frame may have a plurality of distal ends formed as steps.

The connection type grass deck according to an embodiment of the present invention may further include a finishing frame installed along the outermost periphery of the construction unit.

In the connection type grass deck according to an embodiment of the present invention, the finishing frame is connected to an anchor provided on one side of the slope and having a bottom surface on the ground; And a seating portion extending from the upper end of the body to the other side and having an extended bottom surface seated on the upper surface of the installation unit; And the seating portion may be inserted into a plurality of vertically installed second connection pins on the construction unit.

In the embodiment of the present invention, lawns are cultivated in an area other than the construction site, and then transported to the construction site to sequentially separate the outer cover and the inner cover, and then connect the lawns easily.

In addition, the embodiment of the present invention can be stored in a stacked state through a stacked unit, so that the space can be easily utilized when storing, and a large number can be simultaneously moved when moving.

In addition, the embodiment of the present invention can be used while being easily replaced in a form of separating through the construction unit if the grass is damaged after the construction.

In addition, the embodiment of the present invention can prevent a harmful animal such as a mouse or a snake from entering and exiting the floor unit inserted into the installation space of the construction unit through the finishing frame after construction.

In addition, the embodiment of the present invention can easily guide the entrance and exit of a lawn through a slope of a construction unit when a heavy object such as a vehicle or various equipment enters and exits the lawn constructed through a finishing frame, It is possible to prevent breakage which may occur at the outermost periphery.

In addition, effects obtainable or predicted by the embodiments of the present invention will be directly or implicitly disclosed in the detailed description of the embodiments of the present invention. That is, various effects to be predicted according to the embodiment of the present invention will be disclosed in the detailed description to be described later.

1 is a perspective view of a connection type grass deck according to an embodiment of the present invention.
2 is an exploded perspective view of a connection type grass deck according to an embodiment of the present invention.
3 is an enlarged sectional view taken along the line III-III in Fig.
FIG. 4 is a cross-sectional view of a connection type grass deck according to an embodiment of the present invention, which is stacked up and down. FIG.
5 is a perspective view of a construction unit applied to a connecting lawn deck according to an embodiment of the present invention.
Fig. 6 is an installation view of Fig. 5. Fig.
7 is a cross-sectional view of a water supply pipe applied to a connection type grass deck according to an embodiment of the present invention.
8 is a perspective view of a finishing frame applied to a connecting lawn deck according to an embodiment of the present invention.
Fig. 9 is an installation view of Fig. 8. Fig.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

It is to be understood, however, that the present invention is not limited to the illustrated embodiments, and that various changes and modifications may be made without departing from the spirit and scope of the invention. .

In order to clearly explain the embodiments of the present invention, parts that are not related to the description have been omitted. In the following description, the names of the components are denoted by first and second names, , It is not necessarily limited to the order.

And throughout the specification, when an element is referred to as " comprising ", it means that it can include other elements as well, without excluding other elements unless specifically stated otherwise.

Also, the term " unit " in the description means a unit of a comprehensive configuration that performs at least one function or operation.

The connection type grass deck according to the embodiment of the present invention is to construct the lawn by cultivating the lawn in an area other than the construction site, transporting the lawn to the construction site, and connecting and assembling the lawn.

FIG. 1 is a perspective view of a connection type grass deck according to an embodiment of the present invention, FIG. 2 is an exploded perspective view of a connection type grass deck according to an embodiment of the present invention, and FIG. 3 is an enlarged sectional view taken along a line III-III in FIG.

1 to 3, a connection type grass deck 1 according to an embodiment of the present invention includes a floor unit 10, an outer cover 20, an inner cover 30, and a connection frame 40 .

The floor unit 10 provides the bottom surface of the growing space S where the grass G is grown. The floor unit 10 includes an upper plate 11, a lower plate 12, and a connecting rib 13.

The upper plate 11 has a lattice structure, a first drain hole 11a formed in a mesh form in each lattice space forming the lattice structure, and soil used for grass cultivation is provided.

The lower plate 12 has a plurality of second drain holes 12a connected to the first drain holes 11a and is disposed below the upper plate 11. [ At this time, the lower plate 12 may have a lattice structure like the upper plate 11, and the lattice space forming the lattice structure may include the second drain hole 12a.

Here, the first drain hole 11a and the second drain hole 12a serve as a passage through which water to be used is discharged to the outside when the grass G is cultivated.

The connection ribs 13 are formed in a plurality of connection ribs and are provided between the upper plate 11 and the lower plate 12 so as to connect the upper and lower plates 11 and 12 in an up / down direction. At this time, the connection rib 13 may be integrally formed with the upper plate 11 and the lower plate 12 through injection molding, but is not limited thereto.

For example, the connection ribs 13 may be installed in such a manner that the upper and lower ends of the connection ribs 13 are fastened with adhesive or bolts between the upper plate 11 and the lower plate 12, respectively.

That is, the floor unit 10 may be integrally formed with the upper plate 11, the lower plate 12, and the connecting ribs 13, or may be independently formed and connected to each other through the connecting ribs 13 .

In addition, the connection rib 13 is preferably formed in a cross shape so that the upper plate 11 and the lower plate 12 are in a lattice shape, so that they can be easily loaded and supported.

To this end, the connection rib 13 includes a first rib 13a and a second rib 13b, and the first rib 13a and the second rib 13b are formed in a cross shape while crossing each other.

The outer cover 20 is installed around the outer periphery of the floor unit 10 and provides an outer surface of a growing space S where the grass G is grown.

The outer cover 20 is provided to surround the outer periphery of the upper plate 11 and the lower plate 12 of the floor unit 10 and is provided with a display window (21).

At this time, it is preferable that the upper part of the display window 21 is installed so as to protrude upward from the outer cover 20 because the inner cover 30 will be described below.

The outer cover 20 is formed with a plurality of connection grooves 22 through which the connection frame 40 is inserted along a surface surrounding the outer periphery of the upper plate 11 and the lower plate 12.

At this time, the connection groove 22 is formed at a position where the upper plate 11 and the lower plate 12 are connected to a space between the upper and lower plates 11 and 12 separated by the connection ribs 13.

The inner cover 30 is installed along the inner surface of the outer cover 20 and is in contact with soil contained in the cultivation space.

The upper surface of the inner cover 30 protrudes to the upper side of the outer cover 20 and the lower end of the inner cover 30 contacts the bottom surface of the upper plate 11. Surfaces protruding upward from the outer cover 20 protrude from the display window 21, .

Therefore, it is preferable that the upper portion of the display window 21 is installed to protrude above the outer cover 20.

At this time, it is preferable that the inner cover 30 is made of a transparent material so as to prevent the display window 21 from being covered.

When the outer cover 20 is removed, the inner cover 30 prevents the soil contained in the cultivation space S from being lost to the outside, and maintains the shape of the soil agglomerated by the outer cover 20.

The connection frame 40 connects the floor unit 10 and the outer cover 20 of the outer cover 20.

These connection frames 40 are inserted through the respective connection grooves 22 formed in the outer cover 20 to connect the floor unit 10 and the outer cover 20 so that both end portions are connected to the outer cover 20 Respectively.

At this time, both projecting end portions of the connection frame 40 are used as grip portions 41 to be gripped when they are moved.

That is, in the connection type grass deck 1 according to the embodiment of the present invention, the operator grips the grip portion 41 of the connection frame 40 and moves, or the grip portion 41 is lifted and moved through the fork of the forklift .

Hereinafter, the process of cultivating grass G through the connection type grass deck 1 having the above-described configuration will be described.

First, in order to cultivate the grass (G), it is necessary to lay a thick soil with a particle size of 20 mm in the cultivation space (S) and raise an underground water pipe (not shown) thereon. Thereafter, a mixture of grass seed and culture soil is provided at a height of 100 mm.

At this time, the determination of the type of grass (G) is decided according to the climate, place, purpose and the like of the area, and it can be mixed with Hanji and lower grass. After that, the roots of the grass (G) grow sufficiently while growing for about 4 weeks.

As described above, when the grass G is cultivated, the connection type grass decks 1 grown with grass G are moved to the construction site, and the outer cover 20 and the inner cover 30 are sequentially separated The floor units 10 are interconnected to form the lawn.

Meanwhile, the connection type grass deck 1 according to the embodiment of the present invention may further include a stacking unit 50 which allows a plurality of stacked layers to be stacked up and down.

FIG. 4 is a cross-sectional view of a connection type grass deck according to an embodiment of the present invention, which is stacked up and down. FIG.

4, the lamination unit 50 is installed at each corner of the outer cover 20 and connects the plurality of connection type grass decks 1 with each other while connecting the upper and lower outer covers 20 to each other. .

The laminated unit 50 includes a connecting portion 51 and a first connecting pin 52.

The connection portion 51 protrudes outward along the vertical direction of each corner of the outer cover 20 and has an insertion hole 53 formed along the longitudinal direction thereof.

The first connection pin (52) is inserted into the insertion hole (53) of the connection part (51), and the other side is vertically protruded to the outside.

According to the laminated unit 50, the first connecting pin 52 protruded outwardly is inserted into the insertion hole 53 of the laminated unit 50 provided on the connecting lawn decks 1, 1a, 1b, A plurality of connection type grass decks 1 can be stacked up / down.

Therefore, when the connecting lawn deck 1 is stored, space utilization is easy, and a large number of the lawn decks 1 can be moved at the same time.

Furthermore, the connection type grass deck 1 according to the embodiment of the present invention may further include a construction unit 60 for installing a lawn in a construction site where the grass G is installed.

FIG. 5 is a perspective view of a construction unit applied to a connection type grass deck according to an embodiment of the present invention, and FIG. 6 is an installation view of FIG.

5 and 6, the construction unit 60 includes a floor on which grass G is grown in an installation space 60a formed in a lattice shape, The unit 10 is replaceably installed.

This construction unit 60 includes a base frame 61 and a sub-frame 62.

The base frame 61 is formed in a cross shape as shown in FIG. 5 (a), and a plurality of the base frames 61 are connected to each other. At this time, the base frame 61 is formed with the stepped portion 61a at each end thereof, and the tip ends thereof are connected to each other.

The subframe 62 is formed in the form of a "T" shape as shown in FIG. 5 (b) and an "A" shape as shown in FIG. 5 (c) Connect. At this time, the front ends of the sub-frames 62 are formed as stepped portions 62a and connected to the base frame 61 so as to intersect the stepped portions of the base frame 62 when connected.

The base frame 61 and the sub frame 62 may be provided with wiring of electrical equipment necessary for cultivation of the irrigation pipe 63 and the lawn G and may be integrally formed in a grid form Lt; / RTI >

7 is a cross-sectional view of a water supply pipe applied to a connection type grass deck according to an embodiment of the present invention.

Referring to FIG. 7, the water pipe 63 may be installed in the base frame 61 and the sub-frame 62 so as to enclose a mesh-shaped enclosure 63a on the outside.

According to the outer envelope 63a, it is possible to prevent clogging of the water pipe 63 by the gravel, prevent the function of the water pipe 63 from being deteriorated by the roots of the grass G, 63 from being damaged.

In the above description, the base frame 61 and the sub-frame 62 are formed in a lattice shape. However, the present invention is not limited thereto.

For example, a plurality of holes may be formed outside the base frame 61 and the sub-frame 62.

According to the construction unit 60, the connecting lawn deck 1 can be installed at the construction site to form a lawn. To this end, first, the base frame 61 and the sub-frames 62 are connected to the installation surface of the installation site.

Thereafter, the connection type grass deck 1 in which the grass G is cultivated is installed in each installation space 60a in the form of a block to form a lawn.

At this time, when the connection lawn deck 1 is installed in the installation space 60a, the connection frame 40, the outer cover 20 and the inner cover 30 are sequentially removed and the floor unit 60a is installed in the installation space 60a. 10 are inserted.

If the lawn G is partially damaged, the damaged lawn deck 1 is separated from the installation space 60a and replaced with a new connection lawn deck 1.

That is, the connection type grass deck 1 according to the embodiment of the present invention can be used after the connection, in which the connection type grass deck 1, which has been damaged, is removed from the installation unit 60 and is easily replaced.

Meanwhile, the connection type grass deck 1 according to the embodiment of the present invention may further include a finishing frame 70 installed along the outermost part of the construction unit 60 installed on the floor of the construction site as described above.

FIG. 8 is a perspective view of a finishing frame applied to a connecting lawn deck according to an embodiment of the present invention, and FIG. 9 is an installation view of FIG.

Referring to Figs. 8 and 9, such a finishing frame 70 includes a body 71 and a seating portion 72. Fig.

The body 71 has an inclined surface 73 and an anchor insertion groove 75 is formed on the bottom surface of the body 71 so as to be engaged with and fixed to an anchor provided on the ground.

At this time, as the body 71 is inserted into the anchor 74, the finishing frame 70 can be firmly supported on the floor surface, and the construction unit 60 can be firmly supported as a whole.

The seating portion 72 extends partly from the upper end of the body 71 to the other side and the extended bottom surface is seated on the upper surface of the subframe 62 of the construction unit 60.

At this time, the seating part 72 is formed with a pin insertion groove 77 into which a second connection pin 76 vertically installed along the upper surface of the subframe 62 is inserted.

According to such a finishing frame 70, it is possible to prevent harmful animals such as rats and snakes from entering and exiting the floor unit 10 inserted into the installation space 60a of the construction unit 60.

In addition, when a heavy item such as a vehicle or various equipment enters or exits the grass lawn, it is possible to easily guide the grass lawn through the slope 73, and the connecting lawn deck located at the outermost position 1 of the floor unit 10 can be prevented from being broken.

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, And all changes to the scope that are deemed to be valid.

1: Connectable lawn deck 10: Floor unit
G: grass S: cultivation space
11: upper plate 11a: first drain hole
12: lower plate 12a: second drain hole
13: connecting rib 13a: first rib
13b: second rib 20: outer cover
21: display window 22: connection groove
30: inner cover 40: connection frame
41: grip part 50: laminated unit
51: connection part 52: first connection pin
53: insertion hole 60: installation unit
60a: Installation space 61: Base frame
61a: Step 62: Subframe
63: Irrigation pipe 63a: Sheath
70: Finishing frame 71: Body
72: seat part 73: inclined surface
74: Anchor 75: Anchor insertion groove
76: second connecting pin 77: pin insertion groove

Claims (10)

A floor unit providing a bottom surface of the cultivation space where the lawn is grown;
An outer cover which is installed around the outer periphery of the floor unit and provides an outer surface of the cultivation space;
An inner cover installed along an inner surface of the outer cover and contacting the soil provided in the cultivation space; And
At least one connection frame inserted inside from the outside of the outer cover to connect the floor unit and the outer cover while penetrating the inside of the floor unit; ≪ / RTI >
Wherein the floor unit has a lattice structure and has a first drain hole formed in a mesh shape in each space forming a lattice structure; A lower plate having a plurality of second drain holes connected to the first drain holes and disposed at a lower portion of the upper plate; And a plurality of connecting ribs for connecting the upper plate and the lower plate in a spaced manner; Lt; / RTI >
Wherein the connection frame is inserted through a plurality of connection grooves formed on each surface of the outer cover, and both ends protrude outwardly of the outer cover to be gripped when being moved; Lt; / RTI >
Wherein the connection frame is disconnected from the floor unit and the outer cover through the grip unit when the connection frame is installed in an installation space of the construction site where the lawn is made, thereby releasing the connection of the floor unit and the outer cover connected to each other. delete The method according to claim 1,
The outer cover
A display window installed on a surface surrounding the outer periphery of the floor unit to allow the cultivation space to be externally visible; Connected lawn deck. The method according to claim 1,
The inner cover
And wherein when the outer cover is removed, the rounded shape of the soil is retained by the outer cover. delete The method according to claim 1,
A lamination unit installed at each corner of the outer cover and stacking the outer cover connected up and down; Further comprising:
The lamination unit
A connection part protruding outward along a vertical direction of each corner of the outer cover and having an insertion hole formed along its longitudinal direction; And
A first connection pin having one side inserted into the insertion hole of the connection portion and the other side protruding outward; Connected lawn deck. The method according to claim 1,
A construction unit for replacing the floor unit in which lawns are grown in each lattice-shaped installation space, the plurality of lattice-shaped installation units being connected to each other; Wherein the grass deck further comprises: 8. The method of claim 7,
The construction unit
The water pipes and the electrical equipment necessary for cultivation of lawns are installed in the inside,
The construction unit
A cross-shaped base frame; And
A subframe connecting the outermost edges of the base frame; / RTI >
The base frame
And each of the leading ends is formed as a step and connected in plural. 8. The method of claim 7,
A finishing frame installed along an outermost portion of the construction unit; Wherein the grass deck further comprises: 10. The method of claim 9,
The finishing frame
A body having an inclined surface at one side and an anchor provided at a bottom surface of the body; And
A seating part extending from the upper end of the body to the other side and having an extended bottom surface seated on the upper surface of the construction unit; / RTI >
The seat
And a plurality of second connection pins vertically installed on the construction unit.

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